<ul ngbNav
    #nav="ngbNav"
    [activeId]="router.url"
    (navChange)="router.navigate([$event.nextId])"
    class="nav-tabs">
  <li ngbNavItem="/monitoring/active-alerts">
    <a ngbNavLink
       i18n>Active Alerts</a>
  </li>
  <li ngbNavItem="/monitoring/alerts">
    <a ngbNavLink
       i18n>Alerts</a>
  </li>
  <li ngbNavItem="/monitoring/silences">
    <a ngbNavLink
       i18n>Silences</a>
  </li>
</ul>
